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US 8,895,052 B2Granted
Biodegradable compositions having pressure sensitive adhesive properties
AssigneeCohera Medical, Inc.
InventorsEric J. Beckman, Jessica L. Meyers
Life of this patent
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Abstract
A composition comprising the reaction product of (a) an isocyanate group-containing component having an average functionality of at least 2; and (b) an active hydrogen group-containing component having an average functionality of at least 2. The composition is biodegradable, a solid at 22° C. and below, and has pressure sensitive adhesive properties at a temperature of 37° C. and relative humidity of 100%. The composition may be used to adhere polymer meshes or films to biological tissue.
Claims7
A polyurethane composition comprising a reaction product of:
- (a) an isocyanate group-containing component selected from the group consisting of lysine diisocyanate and esters thereof, lysine triisocyanate and esters thereof, and combinations thereof;
- and
- (b) an active hydrogen group-containing component comprising (i) at least one poly-hydroxy functional compound selected from the group consisting of a polyether polyols, polyester polyols, and polyhydroxyalkyl derivatives of C3-C10 hydrocarbons and (ii) at least one mono-hydroxy functional compound selected from the group consisting of hydroxyalkylamines and alkyl alcohols,
- wherein the ratio of hydroxyl groups to isocyanate groups ranges from 0.521 to 0.85;
- wherein the composition is biodegradable, a solid at 22° C., and has pressure sensitive adhesive properties at a temperature of 37° C. and relative humidity of 100%.
2 more elements
Dependencies are inferred from the claim text.